Progress Bar Issue

The game I currently have set up utilizes mouse and keyboard responses based on a stimulus given on screen. I would like to have a progress bar that combines the two to measure how much progress is made. There is a total of 50 for each stimulus, 100 combined total. This is the code I currently have set up. The issue is that the progress bar stays completely empty until all responses have been made, at which point it fills completely. Thank you!

MouseCorrect and KeyboardCorrect are incremented after each response. MaxInput is a constant variable with the value of 100.